Catalina Islands Diving — Costa Rica

The Catalina Islands off Guanacaste are Costa Rica's premier Pacific dive sites. Bull sharks patrol the deeper waters, whitetip reef sharks rest in rocky overhangs, and giant Pacific manta rays cruise through during the dry season. Visibility peaks from December to April when currents bring clear offshore water.

Score
57.6 / 100
Country
Costa Rica
Region
Caribbean
Area
Guanacaste
Nearest airport
Daniel Oduber (LIR)
Visibility
6–24 m
Water temperature
24–29 °C
Max depth
30 m
Current strength
moderate
Dive types
pelagic
Best months
December, January, February, March, April
Minimum certification
Open Water
Access type
boat
Average 2-tank dive cost
$100 USD
Budget tier
mid range
Key species
manta ray, hammerhead, bull shark, whale, humpback
Google rating
0 (0 reviews)
Top operators
Rich Coast Diving, Deep Blue Diving Costa Rica
Nearest hyperbaric chamber
Hospital CIMA Chamber, San Jose (~200 km)
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World Class
Intermediate
Catalina Islands
Costa RicaCaribbean
57.6

SCORE

10.4750°N

-85.7750°E

The Catalina Islands off Guanacaste are Costa Rica's premier Pacific dive sites. Bull sharks patrol the deeper waters, whitetip reef sharks rest in rocky overhangs, and giant Pacific manta rays cruise through during the dry season. Visibility peaks from December to April when currents bring clear offshore water.

Costa Rica's Pacific Pelagic Hotspot

Visibility6–24 m
Temperature24–29°C
Max Depth30 m
Currentmoderate
2-Tank Dive$100
Best MonthsDecember, January, February, March
CertificationOpen WaterIntermediate

Score Breakdown

Click any score to see a detailed breakdown

ML68.0CH32.0VIS61.0SV28.0TMP69.0DA56.0OP78.0TS66.0GT68.0VAL54.0CRD57.0SP57.0

Marine Life

68.0

Species diversity, megafauna encounters, reef fish abundance, macro life, and endemic species.

Species Diversity
80
Megafauna Encounters
84
Reef Fish Abundance
90
Macro Life
0
Endemic Species
45
Marine Life Diversity
68.0
Coral & Reef Health
32.0
Visibility & Conditions
61.0
Dive Site Variety
28.0
Water Temperature
69.0
Depth & Access
56.0
Operator Quality
78.0
Topside Experience
66.0
Getting There
68.0
Value & Cost
54.0
Crowding
57.0
Social Proof
57.0

Key Species

manta rayhammerheadbull sharkwhalehumpback

Dive Types

pelagic

Traveling with Non-Divers?

Your non-diving travel companions will find plenty to enjoy topside while you're underwater. Here are some activities to consider.

Activities for Non-Divers

Playas del Coco beach townzip-lining in GuanacasteRincon de la Vieja volcano hikesnorkelingsportfishing

Nearby Cultural Sites

  • Liberia colonial architecture
  • Rincon de la Vieja National Park

Non-Diver Partner Score

6/10

Good topside options for non-diving companions.

Family FriendlyYes
Restaurants & Nightlifemoderate

Safety & Emergency

Dive Insurance

Dive insurance is essential. Standard travel insurance often excludes scuba diving. We recommend DAN (Divers Alert Network) for comprehensive dive accident coverage.

Learn More at DAN.org
Hyperbaric Chamber200 km — Hospital CIMA Chamber, San Jose
Nearest Hospital30 km

Hospital in Liberia (30 min); chamber in San Jose (4 hr drive or 45 min flight)

Skill LevelIntermediate
Current Strengthmoderate

Top Operators

Rich Coast Diving

PADI

4.8
420 reviewsNITROX

Deep Blue Diving Costa Rica

PADI

4.7
280 reviewsNITROX
Compare This Dive Site
Current conditions
10/10
Waves0.72 m
Swell0.42 m
Wind13.3 km/h
Air29°C
Mainly clear
9d ago
Honest reality check

What your dive shop won't tell you

The minimum certification printed on a brochure is the legal floor, not the honest recommendation. Here's what we actually think you should bring to this site.

Recommended logged dives
25+

Below this we'd send you somewhere easier first.

Recommended certification
Open Water
“Costa Rica's most accessible pelagic diving. Bull sharks, mantas, mobulas within 45 minutes of a beach town.”

What will challenge you

  • →Moderate currents. Expect to drift — this is not a skill-builder site for a first trip after certification.
  • →Nearest hyperbaric chamber is ~200 km away. Evacuation is slow. Dive conservative profiles and get DAN insurance before you fly.
  • →Pacific upwelling means cold thermoclines. 28°C to 18°C on a single dive.

What will surprise you

  • →Thermoclines can drop water temp by 5°C between the surface and depth. Your wetsuit choice should match the minimum, not the average.
Time of day

When to dive it

Every dive shop gives you this briefing at 7am. We just wrote it down. Tidal dependency: slight. Optimal window: Dec-Apr for mantas and best viz. Bull sharks year-round..

Morning
  • Viz
    high
  • Current
    moderate
  • Crowd
    light
  • bull shark encounters
  • reef walls
  • wide angle

Costa Rica's Pacific answer to accessible bull shark diving. Morning from Playas del Coco, 45 minutes out, bulls at the cleaning station.

Afternoon
  • Viz
    high
  • Current
    moderate
  • Crowd
    moderate
  • manta rays in season
  • reef dives
  • pelagic encounters

Giant mantas Dec-Apr. Mobula rays school on the thermocline. Bring a hood — cold upwelling.

Month-by-month

Dive forecast

Realistic conditions by month. Viz ranges are what you should actually expect, not best-case marketing numbers. Confidence % is the share of days that match this profile historically.

Month Viz (m) Temp (°C) CurrentSea RainConfidenceHighlights
Jan10–2026ModCalmDry88%conditions vary
Feb10–1927ModCalmDry88%conditions vary
Mar10–1927ModCalmDry88%conditions vary
Apr10–2028ModCalmDry88%conditions vary
May11–2228ModCalmDry78%conditions vary
Jun11–2227ModChopLight65%conditions vary
Jul10–2026ModChopLight55%conditions vary
Aug10–1926ModChopWet55%conditions vary
Sep10–1926ModChopWet55%conditions vary
Oct10–2027ModChopWet65%conditions vary
Nov11–2227ModCalmLight78%conditions vary
Dec11–2427ModCalmDry88%conditions vary
Shoot here

Photography brief

Subjects are only half the shot. A perfect macro site is useless in a three-knot drift, and a wide-angle dream is useless at 35 m with a murky ceiling. These are the conditions, not the hype.

Macro subjects33
Wide angle60
Viz stability58
Hover friendliness70
Natural light52

Recommended kit

  • →General reef kit — mid-range wide or a 60mm macro depending on the specific site
Level up here

What this site will teach you

The dives that made you a better diver are the ones that made you uncomfortable for the right reasons. Here's what this site will quietly train you for.

What it costsEstimates — calibration pending

7-day trip, per person

Rough ranges anchored to existing regional data — not booking quotes. Land-based trip, standard breakdown.

Budget
$1,550–$2,250

Hostels, shore diving, cheap eats

Flights (RT from US)
$320–$390
Accommodation / day
$50–$100
Diving / day
$90–$100
Food / day
$25–$45
Transfers + misc
$50–$150
Mid-range
$2,450–$3,850

3-star hotels, standard boat ops, mix of restaurants

Flights (RT from US)
$500–$610
Accommodation / day
$120–$220
Diving / day
$100–$130
Food / day
$50–$90
Transfers + misc
$50–$150
Splurge
$4,250–$7,200

Top resorts or liveaboards, premium operators

Flights (RT from US)
$770–$940
Accommodation / day
$260–$500
Diving / day
$130–$170
Food / day
$100–$200
Transfers + misc
$50–$150

Flights priced round-trip from a major US hub. Figures are per person on a shared room. Solo travelers add ~30% to accommodation.

Pair with

Build a trip around it

Most divers fly across the world for one destination and don't realise another worth-it site is 90 minutes away. Here are the honest pairings.

Best dive types here